| 摘要 |
FIELD: ferrous metallurgy; composition of gray cast irons; manufacture of steam, gas and water pipes, valves, fittings, valve bodies. ^ SUBSTANCE: proposed cast iron contains the following constituents, mass-%: carbon, 2.8-3.2; silicon, 0.8-1.2; manganese, 0.8-1.2; chromium, 0.8-1.2; titanium, 0.1-0.2; aluminum, 0.1-0.2; copper, 0.4-0.6; rare-earth elements, 0.1-0.2; niobium, 0.6-1.0; molybdenum, 2.0-3.0; zirconium, 0.1-0.2; nitrogen, 0.1-0.2; the remainder being iron. ^ EFFECT: enhanced strength of cast iron. ^ 1 tbl |
